num = 3
def fun():
    num =5
    print('函数内局部变量num的值：',num)
fun()
print('函数全局部变量num的值：',num)

num = 5
def fun():
    global  num
    num += 1
    print('函数内num的值：',num)
fun()
print('函数外num的值：',num)

def outer():
    num = 1
    def inner():
        nonlocal  num
        num = 2
        print('inner函数中num的值: ',num)
    inner()
    print('outer函数中num的值：',num)
outer()


stu=[{'num':'201801','name':'王五','score':89},
      {'num':'201802','name':'刘军','score':95},
     {'num':'201803','name':'李梦','score':85}]
stu.sort(key=lambda x: x['score'])
for s in stu:
    print('学号：',s['num'],'姓名:',s['name'],'成绩：',s['score'])



